LatticeworkTHE EVIDENCE DESK

Manager Evidence

What did Christopher Bloomstran actually do?

A source-backed history of material decisions from Semper Augustus. We preserve the sequence and observed outcomes instead of compressing judgment into a guru grade.

Material decisions
1
Stocks observed
1
Outcomes observed
1

Each outcome preserves the stock’s post-disclosure excess return over the fixed observation window. The evidence stays decision-level; it is not rolled into a manager score.

Observed decisions and outcomes

  1. Q2 2026

    filed Aug 14, 2026

    45d lag

    SPGINEWNEW

    Christopher Bloomstran · 2.1% of reported portfolio

    Original SEC filing ↗

    -5.5% vs SPY

    34 sessions after disclosure

    direction not supported so far

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The evidence is limited to selected widely owned U.S.-listed securities in Form 13F filings. Filing dates can trail quarter end by up to 45 days in the normal reporting cycle, and the filings do not disclose transaction dates, prices, or intent.